The energy gap law for triplet states in Pt-containing conjugated polymers and monomers

J S Wilson; N Chawdhury; M R Al-Mandhary; M Younus; M S Khan; P R Raithby; A Köhler; R H Friend

doi:10.1021/ja010986s

The energy gap law for triplet states in Pt-containing conjugated polymers and monomers

J Am Chem Soc. 2001 Sep 26;123(38):9412-7. doi: 10.1021/ja010986s.

Authors

J S Wilson¹, N Chawdhury, M R Al-Mandhary, M Younus, M S Khan, P R Raithby, A Köhler, R H Friend

Affiliation

¹ Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, United Kingdom.

PMID: 11562224
DOI: 10.1021/ja010986s

Abstract

The energy gap law established for aromatic hydrocarbons and rare earth ions relates the nonradiative decay rate to the energy gap of a transition through a multiphonon emission process. We show that this energy gap law can be applied to the phosphoresce of a series of conjugated polymers and monomers for which the radiative decay rate has been enhanced through incorporation of a heavy metal. We find that the nonradiative decay rate from the triplet state T(1) increases exponentially with decreasing T(1)-S(0) gap for the polymers and monomers at 300 and 20 K. Comparison of the nonradiative decay of polymers with that of their corresponding monomers highlights the role of electron-lattice coupling.